Susan Trott "Incognito."
Jenny Hunt, a young heiress, visits the estate of Arthur Harrington, unaware that he and the rest of his guests are interested in acquiring a priceless painting she owns.
Susan Trott: "I was born in Andover, Mass, educated in Boston, Providence,and Bennington Vt. I fled the cold of New England to live happily ever after in Northern California, where most of my 16 novels take place, with forays back to NE and to other countries. I am the mother of three, grandmother of eight. As my marathoning days are behind me, I've become a dedicated table tennis player and T'ai Chi dancer."
HarperCollins. Paperback. 1987.
New book. Very slightly yellowing edges of pages.
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See also: Susan Trott "The Housewife and the Assassin" and Susan Trott "Don't Tell Laura."